This would have to be for the entire mod....it is the only way you will be able to complete the mod and make things work. There is no other way that I can even see.
In order to code a script specifically for this mod....I would have to know several things...basicly what all you want this mod to be able to do....where you want the player to spawn during the start of the mod....etc.
Also need to know how many "zombies" you plan to have in any given area which this mod can be made rather large and every ped can actually be turned into a zombie just by giving them the asylum fighting style and animations...simple to do for every ped....and the hard part would be retexturing every ped to resemble a zombie.....kinda daunting of a task...but definately not impossible....just expect this mod to take at least a month or more to do.
I can handle all coding needed for this and share with you the full sources and the custom lua compiler needed.
Terrific!
What would be great is if we could a few people on roofs armed with bats, spudguns and cricket bats (townies, and friendly ones since they're the only ones left alive and the player will be able to tell due to their different style).
I haven't thougt of a spawn point for Jimmy yet, but I'll figure something out.
So, everyone but townies attack Jimmy.
I'll think more about this tomorrow.
For now, good night.